统一异常处理

Chapter3-1-6/src/main/java/com/didispace/Application.java

@@ -0,0 +1,22 @@
+package com.didispace;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ *
+ * @author 程序猿DD
+ * @version 1.0.0
+ * @blog http://blog.didispace.com
+ *
+ */
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+
+		SpringApplication.run(Application.class, args);
+
+	}
+
+}

Chapter3-1-6/src/main/java/com/didispace/exception/GlobalExceptionHandler.java

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+package com.didispace.exception;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+
+@ControllerAdvice
+class GlobalExceptionHandler {
+
+    @ExceptionHandler(value = Exception.class)
+    public ModelAndView defaultErrorHandler(HttpServletRequest req, Exception e) throws Exception {
+        ModelAndView mav = new ModelAndView();
+        mav.addObject("exception", e);
+        mav.addObject("url", req.getRequestURL());
+        mav.setViewName("error");
+        return mav;
+    }
+
+}

Chapter3-1-6/src/main/java/com/didispace/web/HelloController.java

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+package com.didispace.web;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ *
+ * @author 程序猿DD
+ * @version 1.0.0
+ * @blog http://blog.didispace.com
+ *
+ */
+@Controller
+public class HelloController {
+
+    @RequestMapping("/hello")
+    public String hello() throws Exception {
+        throw new Exception("发生错误");
+    }
+
+    @RequestMapping("/")
+    public String index(ModelMap map) {
+        map.addAttribute("host", "http://blog.didispace.com");
+        return "index";
+    }
+
+}

Chapter3-1-6/src/main/resources/templates/error.html

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+<!DOCTYPE html>
+<html>
+<head lang="en">
+    <meta charset="UTF-8" />
+    <title>统一异常处理</title>
+</head>
+<body>
+<h1>Error Handler</h1>
+<div th:text="${url}"></div>
+<div th:text="${exception.message}"></div>
+</body>
+</html>

Chapter3-1-6/src/main/resources/templates/index.html

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+<!DOCTYPE html>
+<html>
+<head lang="en">
+    <meta charset="UTF-8" />
+    <title></title>
+</head>
+<body>
+<h1 th:text="${host}">Hello World</h1>
+</body>
+</html>

Chapter3-1-6/src/test/java/com/didispace/ApplicationTests.java

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+package com.didispace;
+
+import com.didispace.web.HelloController;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockServletContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+
+/**
+ *
+ * @author 程序猿DD
+ * @version 1.0.0
+ * @blog http://blog.didispace.com
+ *
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = MockServletContext.class)
+@WebAppConfiguration
+public class ApplicationTests {
+
+
+
+}